https://casaliniecosrl.it
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
65
GRADE
D
FIX
3
REVIEW
2
PASS
2
INFO
1
Checks
82 PASS 2 REVIEW 3 FIX
FCO2 Per Page LoadAction1.89g CO2 per viewFIX
CO2 Per Page Load
Action1.89g CO2 per view
1.89g CO2 per view
Warning::
1.89g CO2 per page view
This page transfers 6.7 MB, producing an estimated 1.89g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.35g, network 0.33g, end-user device 1.21g.
Got: 1.89g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 226.8 kg CO2/year
With 10,000 page views per month, this page would generate approximately 226.8 kg of CO2 annually — equivalent to charging 28353 smartphones.
1.89g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 14% of websites
Sustainable Web Design model v4 · Page size: 6.7 MB
Your site
1.89g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.35g
Network
0.33g
End-user device
1.21g
At 10,000 monthly views: Monthly: 18.9 kg · Annual: 226.8 kg · ≈ 28353 smartphone charges
DGreen HostingActionNot greenFIX
Green Hosting
ActionNot green
Not green
Info::
No confirmed renewable energy commitment detected
Consider providers like Cloudflare, Google Cloud, or Vercel that match 100% of their energy use with renewables.
Info::
Green hosting status based on known provider commitments
Green hosting detection uses a curated database of provider renewable energy commitments. This is not a real-time verification. For authoritative checks, visit thegreenwebfoundation.org.
Green HostingNot Green Hosted
Hosting Apache HTTP Server✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
FCarbon BudgetAction86th percentileFIX
Carbon Budget
Action86th percentile
86th percentile
Warning::
1.89g CO2 — above the median website (0.60g)
Heavier than an estimated 14% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 86th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.89g
86th percentile
Cleaner than 14% of websites
✗ Above the median website
vs Median 215% more
vs Target 278% more
BWeb Font Weight VariantsNo detectable Google Fonts weightsREVIEW
Web Font Weight Variants
No detectable Google Fonts weights
No detectable Google Fonts weights
Info::
No detectable Google Fonts weights
The analyzer detects font weights via Google Fonts URL parameters (~70% of font-using sites). Self-hosted fonts and non-Google CDN fonts aren't visible to URL-based detection. If you self-host fonts, manually audit how many @font-face weights you ship -- 2-3 weights per family is typically enough; 5+ is usually unused payload.
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
A+Repeat Visit Weight97% cachedPASS
Repeat Visit Weight
97% cached
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 172 KB (vs 6834 KB first visit). 113 of 116 resources are served from browser cache, saving 1.84g CO2 per repeat visit.
Info::
Repeat visit: 0.05g CO2 (first visit: 1.89g)
First visit
6834 KB
Repeat visit
172 KB
97% reduction on repeat visits
Saving 1.84g CO2 per returning visitor
113 resources served from cache · 3 resources re-downloaded
A+Transfer Efficiency99% efficientPASS
Transfer Efficiency
99% efficient
99% efficient
Info::
Transfer efficiency: 99%
Only 95 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 95 KB (1% of page weight)
Unused JS 95 KB
0.03g unnecessary CO2 per visit
Actual transfer 6834 KB
Theoretical minimum 6739 KB
Potential savings 95 KB (0.03g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization54 images, 4145 KB total, 3285 KB wastedINFO
Image Optimization
54 images, 4145 KB total, 3285 KB wasted
Image Optimization Audit
Total Images
54
Total Size
4145 KB
Oversized
44
Wasted
3285 KB
42 missing dimensions 51 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.